Ticks and Disease |
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Page 17
... increase in size ; thus unfed and fully fed females of I. ricinus weigh 1.8 and 250 mg , respectively , i.e. a weight increase of about 140 times . For accommodation of this increase , the cuticle must stretch considerably , and this is ...
... increase in size ; thus unfed and fully fed females of I. ricinus weigh 1.8 and 250 mg , respectively , i.e. a weight increase of about 140 times . For accommodation of this increase , the cuticle must stretch considerably , and this is ...
Page 134
... increases from 3 to 10 mg in the first 5 days , subsequently accelerating to 245 mg during the final feeding stages . The general form of the graph for the weight increase of feeding ticks is that of a sigmoid curve ( Fig . 46 ) . These ...
... increases from 3 to 10 mg in the first 5 days , subsequently accelerating to 245 mg during the final feeding stages . The general form of the graph for the weight increase of feeding ticks is that of a sigmoid curve ( Fig . 46 ) . These ...
Page 136
... increase is 173 mg , i.e. 3-4 times as much blood is imbibed in this short period when compared with the total ingested over the previous 6 days . These authors also observed that some females which had fed for 6 days ( i.e. females ...
... increase is 173 mg , i.e. 3-4 times as much blood is imbibed in this short period when compared with the total ingested over the previous 6 days . These authors also observed that some females which had fed for 6 days ( i.e. females ...
Contents
INTRODUCTION | 1 |
CUTICLETHE KEY TO TICK ADAPTABILITY | 10 |
EXTERNAL FEATURES OF SOME ECONOMICALLY IMPORTANT SPECIES | 27 |
Copyright | |
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Common terms and phrases
activity Africa Amblyomma andersoni animals appear areas argasid Argasidae attached Babesia basis capituli bite body Boophilus broad capitulum cattle cells Cervical grooves cheliceral colour coxa coxal cuticle cytoplasm Dermacentor disease dogs dorsal view eggs endocuticle engorged epicuticle evertsi external spur feeding fluid fully fed genus granules Haemaphysalis hairs hard ticks hexagonus Hoogstraal host humidity Hyalomma hypostome infection Ixodes ricinus Ixodidae large number larvae larvae and nymphs lateral layer Lees legs length louping ill lumen male membrane microplus Milne moult muscles Nuttall nymphal nymphs nymphs and adults occur palp palpi parasites Parasitology pathogens period persicus pharynx Pomerantzev posterior margin punctations rabbits relapsing fever reported Rhipicephalus rickettsiae rounded salivary glands sanguineus scutum sheep soft ticks spermatophore spiracle Spiracular plate spirochaetes spotted fever spur on coxa surface tarsus tarsus IV temperature Theileria tick species tissues transmission transmitted transverse unfed females variabilis vector ventral virus whilst